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Entrepreneur Ralph Lauren spotted wearing Cartier

In this archival black-and-white portrait, Ralph Lauren wears a Prince of Wales checked suit with the effortless authority of someone who has spent decades thinking about clothes. At his wrist, partially visible, is a Cartier Tank Obus in yellow gold — a detail that rewards close attention and speaks to a collector's eye operating well above the obvious.

The Tank Obus debuted in 1929, just over a decade after Louis Cartier introduced the original Tank in 1917. Where the classic Tank is defined by its rectangular case and parallel 'rail' lugs inspired by the Renault FT tank's tracks, the Obus takes a square footprint and wraps it in dramatically curved, bombé lugs that flare outward before curving back toward the wrist. The French word 'obus' — artillery shell — perfectly describes these projecting, tapered attachments. The dial shown in the composite image displays the canonical Cartier Tank layout: silvered guilloche field, Roman numerals in railway-track chapter ring, blued-steel sword hands, and a cabochon-set crown. The yellow gold case sits in warm contrast to a rich tan alligator strap.

The Tank Obus was never a volume product. Produced across the 1930s and into later decades in small numbers, it appeared in yellow gold, white gold, and platinum, occasionally set with diamonds. Vintage examples surface rarely at auction, and when they do, condition and provenance determine everything. Cartier's own Fine Watchmaking division has periodically revisited the shape, but authentic period pieces remain the benchmark for serious collectors. The reference number for vintage Obus pieces varies by period and metal; no single universal reference exists.

Ralph Lauren's relationship with fine watches and objects of historical design is well documented. His car collection — which includes pre-war Bugattis and McLaren F1s — reflects the same sensibility visible at his wrist: a preference for things that were correct from inception and require no trend-chasing to remain relevant. Choosing a Tank Obus over a more recognizable Tank Solo or Tank Américaine is a collector's move, not a marketing one.

On the current market, authenticated vintage yellow gold Cartier Tank Obus examples trade between $15,000 and $45,000 depending on case size, movement condition, and originality of dial and strap. Exceptionally preserved or documented pieces exceed that range at major auction houses.